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Homophily (i.e., "love of the same") is the tendency of individuals to associate and bond with similar others. The presence of homophily has been discovered in a vast array of network studies. More than 100 studies that have observed homophily in some form or another and they establish that similarity breeds connection.〔McPherson, M., Smith-Lovin, L., & Cook, J. M. (2001). ("Birds of a Feather: Homophily in Social Networks" ). ''Annual Review of Sociology''. 27:415–444.〕 These include age, gender, class, and organizational role. Individuals in homophilic relationships share common characteristics (beliefs, values, education, etc.) that make communication and relationship formation easier. The opposite of homophily is heterophily. Homophily is a metric studied in the field of social network analysis in which it is also known as assortativity. Homophily between mated pairs in animals has been extensively studied in the field of evolutionary biology in which it is known as assortative mating. Homophily between mated pairs is common within natural animal mating populations. ==Types== In their original formulation of homophily, Lazarsfeld and Merton (1954) distinguished between ''status homophily'' and ''value homophily''.〔Lazarsfeld, P. F. and Merton, R. K. RONKEYLAF (1954). "Friendship as a Social Process: A Substantive and Methodological Analysis". In ''Freedom and Control in Modern Society'', Morroe Berger, Theodore Abel, and Charles H. Page, eds. New York: Van Nostrand, 18–66.〕 To test the relevance of homophily researchers have distinguished between ''baseline homophily'' and ''inbreeding homophily''. The former is simply the amount of homophily that would be expected by chance and the second is the amount of homophily over and above this expected value.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「homophily」の詳細全文を読む スポンサード リンク
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